New α, ω-methacryloyl-terminated epoxide macromonomers: Synthesis and properties

✍ Scribed by Joachim E. Klee

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 476 KB
• Volume: 7
• Category: Article
• ISSN: 1042-7147
• DOI: 10.1002/(sici)1099-1581(199605)7:5/6<418::aid-pat503>3.0.co;2-i

✦ Synopsis

New a, wmethac yloyl-terminated macromonomers containing epoxide-amine, epoxide-dicarboxylic acid and epoxide-phenolic repeat units have been synthesized. The resulting macromonomers have M , (vapor pressure osmomety) values between 530 and 2000 g/mol. They have been characterized by infrared, 'H-NMR (nuclear magnetic resonance) and I3C-NMR spectroscopy. By using high-performance liquid chromatography and gel permeation chromatography analyses it has been shown that the macromonomers-consist of oligomer homologous series. The distribution of the oligomers agrees with the calculated one. Furthermore, HPLC analysis and N M R spectra show that the epoxide rings were opened by sN1 and sN2 type reactions. The macromonomers are glassy amorphous solids or viscous liquids with glass transition temperatures between 0 and 60°C depending on both the nature of the amine and the degree of polymerization. The photochemical polymerization of the macromonomers leads to new hybrid networks having a volume shrinkage of 1.2 to 2.5%.

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